Queston for 6.2 guys E85 OR....
Mountain Pass
Joined: Feb 2017
Posts: 227
Likes: 8
From: Miami, FL
It's a bad fuel and it's barely cheaper than regular gas around me. The only reason it is slightly cheaper is because it is government subsidized for the time being. Once that subsidy goes away, so does the slightly lower price. It's a feel-good thing for the government. They think they are saving the planet one ear of corn at a time.
You get worse mileage on it, noticeably so. And you get worse performance, noticeably so.
We know ANY ethanol is bad for small engines and marine motors. That’s why they tell you to use Ethanol Free gas. Motor vehicle engines are typically more robust, but not when you start pumping 85% ethanol into them.
Ethanol is corn alcohol and it attracts water absorption. This can cause rust inside vital parts. Alcohol is also not good for seals and valves as it causes premature break down. Ethanol also breaks down faster and can cause clumping in your gasoline. And all these problems are with E10 (normal gas) so the problems only compound with E85.
You get worse mileage on it, noticeably so. And you get worse performance, noticeably so.
We know ANY ethanol is bad for small engines and marine motors. That’s why they tell you to use Ethanol Free gas. Motor vehicle engines are typically more robust, but not when you start pumping 85% ethanol into them.
Ethanol is corn alcohol and it attracts water absorption. This can cause rust inside vital parts. Alcohol is also not good for seals and valves as it causes premature break down. Ethanol also breaks down faster and can cause clumping in your gasoline. And all these problems are with E10 (normal gas) so the problems only compound with E85.
Laughing Gas
Joined: Aug 2002
Posts: 896
Likes: 12
From: Kenna,wv
Not a 6.2 but I ran some E85 on my old 2012 F150 with the 5.0. It was noticeably cheaper.
I lost a few mpg's each time I ran it. I did notice a perceived bump in performance but nothing earth shattering.
My 13 Raptor with the 6.2 isn't flex fuel. I was going to run a tank just to see how it does.
But with the Raptor, it has a blurb in the owners manual about different hp ratings between 87 and 93 octane. Iirc, it's around 10hp
I lost a few mpg's each time I ran it. I did notice a perceived bump in performance but nothing earth shattering.
My 13 Raptor with the 6.2 isn't flex fuel. I was going to run a tank just to see how it does.
But with the Raptor, it has a blurb in the owners manual about different hp ratings between 87 and 93 octane. Iirc, it's around 10hp
Laughing Gas
Joined: Jul 2010
Posts: 859
Likes: 10
From: North Carolina
It's a bad fuel and it's barely cheaper than regular gas around me. The only reason it is slightly cheaper is because it is government subsidized for the time being. Once that subsidy goes away, so does the slightly lower price. It's a feel-good thing for the government. They think they are saving the planet one ear of corn at a time.
You get worse mileage on it, noticeably so. And you get worse performance, noticeably so.
We know ANY ethanol is bad for small engines and marine motors. That’s why they tell you to use Ethanol Free gas. Motor vehicle engines are typically more robust, but not when you start pumping 85% ethanol into them.
Ethanol is corn alcohol and it attracts water absorption. This can cause rust inside vital parts. Alcohol is also not good for seals and valves as it causes premature break down. Ethanol also breaks down faster and can cause clumping in your gasoline. And all these problems are with E10 (normal gas) so the problems only compound with E85.
You get worse mileage on it, noticeably so. And you get worse performance, noticeably so.
We know ANY ethanol is bad for small engines and marine motors. That’s why they tell you to use Ethanol Free gas. Motor vehicle engines are typically more robust, but not when you start pumping 85% ethanol into them.
Ethanol is corn alcohol and it attracts water absorption. This can cause rust inside vital parts. Alcohol is also not good for seals and valves as it causes premature break down. Ethanol also breaks down faster and can cause clumping in your gasoline. And all these problems are with E10 (normal gas) so the problems only compound with E85.
Yeah, I use straight gas in my lawn equipment. But the fact remains that I noticed no difference in performance, a slight difference in mileage (Read my original post in this thread with factual information), and a relevant difference in my wallet. Plenty of folks own these trucks and run them on cheap 87 and E85 alike for hundreds of thousands of miles with out a hiccup. This is exactly why I traded my 6.7 and came back to the gas motor, not that there's anything wrong with the 6.7, it's just that they are more prone to damage by way of bad fuel and based on my usage it's not a risk I was willing to take. The 6.2 is a stout motor designed by engineers to be compatible with E85 due to the use of different seals and components. So while all you stated in your post is true to some extent, it is irrelevant regarding the use of E85 in a vehicle designed to use it.
Senior User
Joined: Jun 2017
Posts: 295
Likes: 1
I do not believe that higher octane will give better mileage. It will give better performance and be cleaner in your engine but not better mileage.
The injectors will still squirt the same amount of fuel no matter what, its your foot that can control the mileage.
The injectors will still squirt the same amount of fuel no matter what, its your foot that can control the mileage.
Senior User
Joined: Jun 2014
Posts: 128
Likes: 1
From: Waterloo, IA
So, in hot conditions, the knock sensor will tell the computer to pull a few degrees of timing. If the fuel has enough octane as in E85, it wont and you will see a performance increase. Heck, I've run E85 in my race car because it is cheap high octane fuel compared to the $7/gallon 110 race fuel.
I've been tuning my own race car for almost 10 years now with a Bigstuff3 system and feel that Ford really has figured this out.
That being said, my in-town general runaround is good old E10 87. When I tow the race car, it's E85.
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